lazylongboarder

iTrader: (2)

Evidently the 1998 exhaust manifolds are the only Ls series manifolds that aren't cast iron. How do they do under boost? I imagine they've been used with the Sts kits, but with how much boost?

I'm looking for 750+ RWHP. I figure these would be easy to modify with a T3 flange making them a time saver for my project.

Thanks, Russ

lazylongboarder

iTrader: (2)

After some more research it looks like the 97 C5's and 98 Fbodies are extruded stainless. Anyone use these with more than 15 lbs of boost?

lazylongboarder

iTrader: (2)

Woo! Bump! Somebody will chime in eventually. Stainless isn't cast, and I know there have been plenty of guinea pigs on the subject. I just want to know how well they work.

I imagine they [stainless] wouldn't have any problems with heavy use (15-20 lbs), even daily use...but my question is, will these handle road race amounts of heat? I have mild steel Hooker shorties, but REALLY don't want to use them. I'll be using them in the mile up to 1.0-1.2 bar.

Thanks, Russ

NemeSS

iTrader: (127)

Im building some hotparts around said manifolds. but no input yet. im confident they will support around 800bhp at least. cutting off the triangle flanges and welding back on vband.
but now that u mentioned t3,